Arnal is both a surname and a given name. Notable people with the name include:
Surname Ángel Ribera Arnal (1909–2002), Spanish chess master Albert Arnal (1913–1966), Spanish Valencian pilota Étienne Arnal (1794–1872), French actor Jesús Arnal (1904–1971), Aragonese priest Maria Arnal (born 1987), Spanish singer Mariana Arnal (born 1973), Argentine field hockey player José Cabrero Arnal (1909–1982), Spanish cartoonist Rubén García Arnal (born 1980), Spanish footballer
Given name Arnal Llibert Conde Carbó (born 1980), Spanish footballer